Make store SQL Server compatible

edition/storage/mysql.go

@@ -354,6 +354,16 @@ func (p MySQLProvider) ConvertTimestamp() (statement string) {
 	return `STR_TO_DATE(?,'%Y-%m-%d %H:%i:%s')`
 }
 
+// IsTrue returns "1"
+func (p MySQLProvider) IsTrue() string {
+	return "1"
+}
+
+// IsFalse returns "0"
+func (p MySQLProvider) IsFalse() string {
+	return "0"
+}
+
 // convertDatabaseVersion turns database version string as major,minor,patch numerics.
 func convertDatabaseVersion(v string) (ints []int, err error) {
 	ints = []int{0, 0, 0}

edition/storage/postgresql.go

@@ -295,3 +295,13 @@ func (p PostgreSQLProvider) VerfiyCharacterCollation(charset, collation string)
 func (p PostgreSQLProvider) ConvertTimestamp() (statement string) {
 	return `to_timestamp(?,'YYYY-MM-DD HH24:MI:SS')`
 }
+
+// IsTrue returns "true"
+func (p PostgreSQLProvider) IsTrue() string {
+	return "true"
+}
+
+// IsFalse returns "false"
+func (p PostgreSQLProvider) IsFalse() string {
+	return "false"
+}

edition/storage/sqlserver.go

@@ -320,3 +320,13 @@ func (p SQLServerProvider) VerfiyCharacterCollation(charset, collation string) (
 func (p SQLServerProvider) ConvertTimestamp() (statement string) {
 	return `convert(varchar, ?, 13)`
 }
+
+// IsTrue returns "1"
+func (p SQLServerProvider) IsTrue() string {
+	return "1"
+}
+
+// IsFalse returns "0"
+func (p SQLServerProvider) IsFalse() string {
+	return "0"
+}